Multicast Security Using RSA for Inter Cluster Communication with Rekeying in MANET

In Wireless networks, nodes can communicate through base stations. In this scenario, the communication process takes more time to complete. To reduce this delay time, a Mobile Ad hoc Network is introduced. A Mobile ad hoc Network (MANET) is an infrastructure less network. In this, each node acts as a base station and is responsible for dynamically discovering other nodes it can directly communicate with. In a MANET, message delivery can speed up by means of group communication. In an adversarial ad hoc environment such as in military or public emergency network applications, it is necessary to provide secure multicast or group communication. For the secure group communication, there is a process of generating, distributing and updating keys to the network nodes is called key management. One of the key management schemes is group key management scheme. In this scheme updating of keys for newly joining or leaving nodes in a group is done by rekeying technique. In the existing system, the authors have employed a technique using One-way Function Chain (OFC) for key generation. In the proposed research, the keys are generated randomly and encrypted the generated keys using RSA algorithm before the keys are assigned to the nodes in clusters. This technique is simulated in network simulator tool (NS2). Key WordsAd Hoc, MANET, DSDV, DSR, AODV, AOMDV, QoS, NS2